| Index | Simms | Montana | National |
| Cost of living | 98 | 102 | 100 |
| Groceries | 104 | 103 | 100 |
| Health care | 102 | 102 | 100 |
| Housing | 87 | 101 | 100 |
| Transportation | 101 | 100 | 100 |
| Utilities | 105 | 104 | 100 |
| Lifestyle & Entertainment | 101 | 100 | 100 |
| Household Items | 99 | 100 | 100 |
| Education & Childcare | 106 | 102 | 100 |

| Cost of living index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index | |
| Lifestyle index | |
| Household index | |
| Educare index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $124,538 | $10,378 | $2,906 | $3,737 |
| Renters | $0 | $0 | $0 | $0 |
| State | General Sales Tax | With Max Surtax |
| Montana | 0% | 0% |
| State | Income Tax (Low) | Income Tax (High) |
| Montana | 1% | 6.75% |
| City | Population | Cost of Living Index | National Avg. |
| Fairfield, MT | 706 | 96 | 4.2% |
| Sun River, MT | 42 | 102 | 1.8% |
| Fort Shaw, MT | 144 | 109 | 8.6% |
| Simms, MT | 349 | 98 | 2.2% |
| City | Population | Cost of Living Index | National Avg. |
| St. Marks, FL | 349 | 118 | 17.9% |
| Keysville, GA | 349 | 90 | 10.1% |
| Montrose, GA | 349 | 84 | 16.1% |
| Duncombe, IA | 349 | 80 | 20.2% |
| Kempton, IN | 349 | 83 | 16.5% |
| Simms, MT | 349 | 98 | 2.2% |